For rollers of rolling mills



(No Model.)

N0. 319,648. 4 Patented June 9, i885.

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P. WEGMANN.

WHEEL GEARING FOR ROLLERS OF ROLLING MILLS. N0. 319,648. Patented June 9, 1885. I

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NITED TATES FRIEDRICH \VEGMANN, OF Zl lRICH, SWITZERLAND.

' QPEC'IPICATION forming part of Letters Patent No. 319,648, dated June 9, 1885.

Application filed March 24, 1885. (No model.) Patented in England February 5, 1885, No. 1,618; in Belgium February 5, 1883, No. 67,765, and in Italy February 5, 1885, No. 17,888/309.

To all whom it may concern Be it known that I, Fnrnnnrorr WEGMANN, a citizen of the Republic of Switzerland, residing at Zurich, in the Republic of Switzerland, engineer and machine -manufacturer, have invented new and useful Adjustable VVheel-Gearing for the Rollers of Roller-Mills, (for which Letters Patent have been granted heretofore to me by the governments of Belgium, No. 67,765, dated February 5, 1885; Great Britain, No. 1,618, dated February 5, 1885, and Italy, No. 17,888/309, dated February 5, 1885,) and generally for spindles with varying distance, of which the following is a specification.

The tooth-wheel gear in roller-mills has the defect that as the rollers wear by abrasion or by being turned up in the lathe the distance between their centers is varied, and thus the teeth of the wheels do not gear properly with each other,and by increased wear have to be replaced by new ones. There are also many other cases where it is desirable to adjust the gearing in such manner as to insureproper gearing on the pitch-lines of the tooth-wheels at all times. I have invented an arrangement of wheel-gearing which can be adjusted with case, according to the varied diameter of the rollers or varied distance between centers generally, so that the wheels may always gear exactly on their pitch-lines. Instead of gearing the two rollers by means of two toothwheels fixed on their spindles and gearing directly with each other, I employ two wheels between which a third wheel having an inner and outer toothed rim is interposed, such wheel being mounted eccentrically to the rollerspindle carrying the innerdriving-wheel, and adapted to keep in uuchangeable gear therewith, but so that the outer tooth-rim, according to the distance from the driven toothwheel on the other rollerspindle, can be adj usted as required.

In the accompanying drawings I have illustrated the invention with special reference to roller-mills; but it is obviously applicable to any other purpose where it is needful or useful to adjust the gearing according to varying distances between spindle-centers.

Figure 1 is a sectional side view of a rollermill constructed with this gearing; Fig. 2, a plan section; Fig. 3, apart-sectional end view, and Fig. 3 a detail side view. Fig. 4 is a side view, and Fig. 5 a plan section, of a modi fied form of gearing. Fig. 6 is a side view; Fig. 7, a plan section of another modification; and Figs. 8 and 9, respectively, a side view and plan section on line X Y Z, Fig. 8, of yet another modification.

Referring to Figs. 1, 2, 3, and 3, the double wheel R is mounted loosely on an eccentric hub, E, in which the roller-spindle A turns. The said hub E can be'adjusted and fixed in position by means of the bolt B, fixed to the framing, as shown at Fig. 2, and passing through a slot in the sector-shaped part L, formed on the hub E, and shown separately in Fig. 3, which part L can be shifted round its spindle A by taking hold of the handle G. Around this eccentric hub E the double wheel R turns, and in it turns the spindle A with the tooth-wheel R. This latter wheel will in any position of the eccentric E gear constantly with theinner tooth-rim of the wheel R, while the outer tooth-rim of the wheel R, through the, variable eccentric position of the eccentric E, according to the distance between the roller-spindles A and A", is adjustable for gearing with the wheel R or, as required in some case, may be thrown entirely out of gear.

In the modification, Figs. 4. and 5, the co centric E is mounted on the prolonged outer end of spindle A, and is held. by two screws, in combination with helical springs,which are applied in the cover over the wheels.

In Figs. 6 and 7 the double wheel is not mounted by means of an eccentric hub placed on the spindle A, but by a gudgeon, Z, which, independently of the spindle A, is guided in the bell-shaped cap H of the wheel-cover, and is held fast by the nut M. V In Figs. 8 and 9 the double wheel R is shown as being mounted on agudgeon, P, which is fixed on the framing of the machine outside the periphery of the wheel R, but adjustable in the slot 0 in the wheel R.

I claim A tooth-wheel gearing for connecting two spindles which are to turn in opposite directions, consisting of a tooth-wheel, R, fixed on line gear with the wheel R, substantially as its spindle A, and a tooth-wheel, R, fixed set forth.

on its spindle A and an intermediate tooth- In testimony whereof I have signed my name wheel, R, having an inner tooth-rim gearing to this specificationin the presence of two sub- 5 with the tooth-wheel R, and an outer toothscribing witnesses.

rim gearing with the tooth-wheel R, such intermediate wheel, B, being mounted loosely, FRIEDRICH WEGMANN' and its center being adjustable eccentrieally WVitnesses:

relatively to the spindle A, for the purpose of WILLIAM SCHNEIDER, 1o keeping its outer tooth-rim in proper pitch- ED. EGLI. 

